Is there is a way to establish the paternal affiliation of the woman and the man who are not married to each other?

Yes, it is possible under certain conditions:

1. General rule:

• If a child is born in a marriage, the child's father is considered to be the mother's husband, and the father is automatically recorded.

1. Exception:

• Another man may be registered as the child's father if the child's origin is determined by a joint application of a woman and a man who are not married to each other.
• Such an application may be submitted to the civil registry office both before and after the child's birth.

1. If an underage man is registered as the child's father:

• The civil registry office must notify the minor's parents, guardian or custodian of the intention to register him as the child's father.
• If it is impossible to notify these persons, the civil registry office is obliged to inform the guardianship and custody authority.